Curious what our points of failure are on this car.

Has anyone pushed them to the limit? If so, what gives ?

Rods/pistons/ringlands/head bolts/etc.

Thinking stock motor, sans an inline pro h/g, 35r and ~550whp'ish....

Thanks.

 

Rear end

 

Very true, and my apologies for not clarifying better.

I am referring to motor only.

Will I have any issues making 550whp assuming I have the supporting mods, like inj. fuel pump, clutch/etc.

 

500whp has been done many times on stock bottom ends, i dunno if the extra 50whp matters that much to you or not

 

I've seen that as well.

I'm just curious how much you can push them before something gives.

When they break, what is the failure typically?

 

well since the car comes with forged internals, i would assume that the cylinder walls would be the first things to go.

i would check on s2ki in their forced induction forum for more info though
http://www.s2ki.com/forums/index.php?showtopic=313786

 

S2K Diff fails harder than 1st graders taking statistics.

 

Truestory.


I'd also like to spin the AP2 to around 8500 as well, I don't believe the extra 300rpm would be deadly.

You read and see everyone saying you can't go past a certain whp mark, but who has gone past that and failed, or are we just "assuming" it won't hold together?

 

8500 rpms in the f22c is the same as the 9000 rpms on the f20c. according to ichishima (ceo of Spoon sports)

i think that the people saying that it cant be done have either tried, or seen people attempt it. i know that inlinepro has a 750+whp s2000, so they would be the best people to talk to

 

Just get the GT30 for go a max of 530ish on race gas. There is really no need to rev higher either, if it's not making more power up there.

 

May not make more power, but extending your powerband is always nice.

I was also looking @ making full power on pump, not messing with race gas.

I was making 450-500whp on the civic, but never went past 380whp on pump b/c the nearest place to purchase race was 2hrs away.

It's nice to say I have xxx power, but if you never use it other than bragging rights, whats the point ?

 

You can't use 500HP on the streets anyway, so whats the point? 550 is pushing too much on pump gas. It just wont last. Go for upper 400's with a GT30 and just enjoy it mang.

 

the inlinepro kit's manifold is too inefficent to hit the power numbers you want unless their new high power kit is production ready. I'm looking at the full-race kit for my motor since their manifold is sick and their kit makes so much more power than the inline pro kit at the same psi.

I want to hit 500whp, you say why? I say why not? I'm going to hedge my bet and lower the compression with inlinepro's 3mm headgasket. full-race says their GT30R kit is good for up to 550whp so I'm going to go with that. their GT35R kit is only $150 more but without a built motor it's not worth it to me since I'll just loose mid-range power waiting for the turbo to spool. some guys say that the GT30R and the GT35R spool the same on full-race's kit, if that's really the case I might get the GT35R since it'll be more effiecient, I'll ask full-race directly when I'm ready to buy the kit.

I've seen lots of guys on s2ki hit 500-550 whp on stock motors on race gas or the head gasket. one guy recently pushed the stock motor to 550whp on pump gas and 650 on race gas, but he has a built motor on the way so he didn't care if it lasted and he had enough money not to care about breaking stuff. how long can you push it? don't know, lots of guys on there are dyno queens and just want the big number to post online. a majority of them run 400-450whp on pump gas, I haven't heard of anyone killing motors on properly tuned motors at those numbers, just rear-ends

when I go for my 500whp goal I'm just going to let the dyno and knock sensor say when to stop I just want the most safe power on pump gas, if that's close to 500whp then I'll be happy

 

I am going to be putting my own setup together, never been a fan of kits, as they are never complete.

A typical log style manifold isn't going to net the numbers I'd like, but a nice tubular mani will.

I beleive I am going to leave the motor completely stock, and see what I can make on pump gas. If I am close to the 500whp I might throw a few gallons of race in to see if I can hit it.

Otherwise you are right, 500whp on the street is pointless, but I'd like to have the extra available if/when I hit the track.

 

The ILP manifold will support 500HP no problem. In fact I recommend it over any tubular manifold for street and track (non-drag) use. Reason being it keeps under hood temps down and spools up much faster then tubular manifolds. Obviously when you start making allot of power the tubular manifold will flow better up top.

 

Do you really think you'll be able to use 500+ WHP on a stock bottom S2000 for anything more than bragging rights? Maybe an underhood fireworks show.

 

maybe ILP's manifold will hit 500whp, but it'll take far more boost than full-race's. you're talking 25-27psi instead of 17-18. at those higher boost levels the turbo is no longer as efficient. and as far as spooling up the full-race manifold out-performs the inlinepro cast log style in every way. the log style will not out perform the tubular style at all, spool time or power, not with these two kits anyway. at least when you look at all the guys on s2ki.

 

I'd like to think that if I can get a 400+ fwd civic to hook on the street, a 500whp rwd vehicle should be somewhat easier, thats just me.

I'm not sure how your comment has anything to do with my initial question, besides I'm not going to be out street racing, I prefer the track.

 

Smoke, I generally value your opinion, but in this instance I will have torespectfully disagree.

I have been talking to several respected tuners on here, ones you would know of who state the complete opposite. I am not referring to heat, but flow and power output depended on manifold design.

Small quote from said pm.

 

more HP = more fun, it's that simple

if it wasn't for the amount of people getting that kinda power out of the stock S2000 motors I would tend to aggree with you but honestly with the right tuning and fuel upgrades the only thing you have to worry about is the rear end. if you want over 550whp then you're going to have to build the motor to have a pump gas tune and that much power.

 

You are forgetting about the very explodeable tranny.

 

My point is that it's going to last about 3 runs.

 

the rear end will go first, most guys don't break the tranny until the rear end is rebuilt and can hold the power. once the rear end is done then yes you will have to worry about the tranny. but if you're nice to the tranny and don't beat the hell out of it you'll get plenty of life out of it. guys kill the trannys and rear end on hard launches, not just flooring it when they're already in gear. launch the car smoothly, shift smoothly, and you'll be ok. beat the hell out of it 24/7 and you'd better have some cash to start replacing stuff again just look at how many 400-500whp guys there are on s2ki and you'll see that it can be done without the tranny / rear end automatically exploding.

 

Mmkay.

 

x2